By Muslims spread all over the world
that is not a religion but is an Islamic name
Oman is an Islamic country.
please, see the related question below which is " In which part of the world is Islamic religion mainly practiced today ?"
Allover the world and ranging from small minorities in some places to 100% majorities in other places.
what is the predominant religion practiced in Denmark
what religion was practiced in South Carolina
The Turks changed the name of Constantinople to Istanbul and practiced Islam.
The main religion practiced in Chechnya is Islam, predominantly Sunni Islam. The majority of Chechens identify as Muslims and adhere to Islamic traditions and beliefs in their daily lives.
The dominant religion in India is Islamic religion
Bhuddism, Hindu religion is more practiced..
need more info about the religion that was practiced
England major practiced religion is Protestantism.